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- W886393614 abstract "Urarium monocarbide is a very promising fuel for graphite moderated high temperatare reactors. At high temperatures, however, it reacts with graphite to form compounds richer in carbon. X-ray data of the systems UC --MeC --C (Me = Zr, Hf, Nb, Ta) show that in all these systems extended two-phase regions (U, Me) C + C occur. At 1700 deg C the stable Bl-solid solution contains 30 mol.-% UC in the system UC--ZrC, 14 mol.-% UC in UC--HfC; 28 mol.-% in UC --NbC and 23 mol.-% in UC--TaC. At higher temperatares these boundaries shift slightly toward the UC side. The carbides U/sub 2/C/sub 3/ and UC/sub 2/ do not take up these metals into solution. Based on thermodynamical calculations together with the known values of UC, -- 17 plus or minus 2.5 kcal was obtained for the free energy of formation of UC/sub 2/. The relatively large error results mainly from the uncertainty of the value for UC. (auth)" @default.
- W886393614 created "2016-06-24" @default.
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- W886393614 date "1961-04-01" @default.
- W886393614 modified "2023-09-24" @default.
- W886393614 title "INFORMATION ON THE SYSTEM URANIUM-ZIRCONIUM-(HAFNIUM, NIOBIUM, TANTALUM)- CARBON" @default.
- W886393614 hasPublicationYear "1961" @default.
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